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Asia > Indonesia > Hutan Pinus/Janthoi Nature Reserve

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Summary

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Sumatran Orangutans (Pongo abelii) are present in Hutan Pinus/Janthoi Nature Reserve.
The orangutan population size is unknown.
The orangutan population trend is unknown.
The total site area is 80 km².
The major threat is the illegal logging and timber harvesting.
The main conservation activities have focused on the rehabilitating natural habitats and educating the community.
Hutan Pinus/Janthoi Nature Reserve has held the protected area status since 1984.

Site characteristics

Table 1. Basic site information for Hutan Pinus/Janthoi Nature Reserve

Species	Pongo abelii
Area	80 km²
Coordinates	Lat: 5.173217 , Lon: 95.694350
Type of site	Protected area (Nature Reserve)
Habitat types	Subtropical/tropical moist lowland forest
Type of governance	Governance by government

Types of sites Governance types Habitat types

Ape status

Table 2. Ape population estimates reported for Hutan Pinus/Janthoi Nature Reserve

Species	Year	Occurrence	Encounter or vistation rate (nests/km; ind/day)	Density estimate [ind./ km²] (95% CI)	Abundance estimate (95% CI)	Survey area	Sampling method	Analytical framework	Source	Comments	A.P.E.S. database ID
Pongo abelii

Sampling methods Analytical frameworks

Threats

Table 3. Threats to apes reported for Hutan Pinus/Janthoi Nature Reserve

Category	Specific threats	Threat level	Description	Year of threat
5 Biological resource use	5.3 Logging & wood harvesting	Present (unknown severity)	Illegal logging and timber harvesting activities were reported (Mohamed bin Zayed Species Conservation Fund 2025).	2018-Ongoing (2025)

Threats

Conservation activities

Table 4. Conservation activities reported for Hutan Pinus/Janthoi Nature Reserve

Category	Specific activity	Description	Year of activity
5 Protection & restoration	5.2 Legally protect ape habitat	Hutan Pinus/Janthoi Nature Reserve has held the protected area status since 1984 (Sherman et al. 2022).	1984-Ongoing (2022)
4 Education & awareness	Other	Community outreach and capacity building (Sherman et al. 2022).	2010-Ongoing (2022)
5 Protection & restoration	Other	Habitat management activities were reported to be present (Sherman et al. 2022).	2010-Ongoing (2022)

Conservation activities

Challenges

Enablers

Research activities

Research activities were reported to be carried out in Hutan Pinus/Janthoi Nature Reserve, details are unknown (Sherman et al. 2022).

Documented behaviours

Exposure to climate change impacts

External links

References

Sherman, J., Voigt, M., Ancrenaz, M., Wich, S. A., Qomariah, I. N., Lyman, E., Massingham, E., & Meijaard, E. (2022). Orangutan killing and trade in Indonesia: Wildlife crime, enforcement, and deterrence patterns. Biological Conservation, 276, 109744. https://doi.org/10.1016/j.biocon.2022.109744
Mohamed bin Zayed Species Conservation Fund. (n.d.). Sumatran orangutan case study. Species Conservation (Mohamed bin Zayed Species Conservation Fund). Retrieved June 17, 2025, from https://www.speciesconservation.org/case-studies-projects/sumatran-orangutan/17180

Page created by: Aime Mizero Date: 2025-06-09

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-|Community outreach and capacity building (Sherman et al. 2022).
+|Habitat management activities were reported to be present (Sherman et al. 2022).
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 |2010-Ongoing (2022)